The Experts below are selected from a list of 27951 Experts worldwide ranked by ideXlab platform
Sailing He - One of the best experts on this subject based on the ideXlab platform.
-
an Open Cavity fabry perot interferometer with pva coating for simultaneous measurement of relative humidity and temperature
Sensors and Actuators B-chemical, 2016Co-Authors: Shengnan Wu, Guofeng Yan, Bin Zhou, Zhenggang Lian, Xiang Chen, Sailing HeAbstract:Abstract A fiber-optic Open-Cavity Fabry-Perot (FP) interferometer (FPI) with polyvinyl alcohol (PVA) coating is proposed and experimentally demonstrated for simultaneous measurement of relative humidity (RH) and temperature. The FPI consists of an etched side-hole fiber (SHF) sandwiched in between two leading single-mode-fibers. The PVA film is plated on the fiber surface functioning as a humidity-to-refractive index (RI) transducer. Theoretical analysis details the RH and temperature influence on the spectral fringes of the FPI. Experimental results confirms and show that, the reflection loss of the FPI nonlinearly decreases more than 15 dB when the RH increases from 30%RH to 90%RH with a highest sensitivity of −1.2 dB/%RH, while the dip wavelength of the spectral fringe exhibits linear RH and temperature sensitivities of −23.1 pm/%RH and −6.14 pm/°C, respectively. Thus, by monitoring the reflection and wavelength of the interference dip, the proposed sensor enables accurate simultaneous measurement of RH and temperature. A fast and reversible time response has also been demonstrated. Such excellent sensing performance with compactness, ease of fabrication makes our sensing structure a highly promising candidate for RH and temperature monitoring applications.
-
Open Cavity fabry perot interferometer based on etched side hole fiber for microfluidic sensing
IEEE Photonics Technology Letters, 2015Co-Authors: Shengnan Wu, Guofeng Yan, Bin Zhou, Elhang Lee, Sailing HeAbstract:An Open-Cavity fiber-optic Fabry-Perot interferometer (FPI) is designed and demonstrated, with a particular consideration for microfluidic refractive index (RI) sensing. The FPI is composed of an etched side-hole fiber (SHF) sandwiched between two single-mode-fibers. Chemical etching method is used to Open up the Cavity in the SHF. Experimental results show that an optimal RI sensitivity of more than 1250 nm/RI can be achieved with an Open-Cavity length of $38~\mu \text{m}$ for the microfluidic RI range from 1.3400 to 1.3470. In addition, the temperature sensitivity can reach an ultralow level of 1.1 pm/°C. The ease of fabrication, capability for in situ measurement, and excellent performance results suggest that the proposed FPI is highly promising as an inline refractometer for temperature-insensitive label-free microfluidic detection and sensing.
Xueguang Qiao - One of the best experts on this subject based on the ideXlab platform.
-
gas refractometer based on a side Open fiber optic fabry perot interferometer
Applied Optics, 2017Co-Authors: Ruohui Wang, Pingchao Huang, Jiawei He, Xueguang QiaoAbstract:In this paper, we present a gas refractometer based on an Open Cavity optical fiber Fabry–Perot interferometer. The Fabry–Perot Cavity is fabricated by sandwiching a short section of preprocessed side hole fiber between two single-mode fibers. A chemical etching process creates a side-Open Cavity through which gas can enter and leave freely. By tracking the wavelength shift of the fringe pattern, the measurement of the refractive index change of nitrogen can be realized. The experiment results show the gas RI sensitivity is up to 1290 nm/RIU.
-
gas refractometer based on optical fiber extrinsic fabry perot interferometer with Open Cavity
IEEE Photonics Technology Letters, 2015Co-Authors: Ruohui Wang, Xueguang QiaoAbstract:In this letter, we proposed a gas refractometer based on optical fiber Fabry–Perot interferometer with an Open Cavity. The Fabry–Perot Cavity is a short section capillary tube spliced between a single-mode fiber and a side-hole fiber (SHF). The unique cladding of the SHF enables gas entering or leaving the Fabry–Perot Cavity freely. The measurement of pressure-induced refractive index change of nitrogen gas has been demonstrated by monitoring the wavelength shift of the interference pattern. The robust and microsize architecture make the interferometer a good candidate for gas sensing applications.
Dewen Duan - One of the best experts on this subject based on the ideXlab platform.
-
high sensitivity gas refractometer based on all fiber Open Cavity fabry perot interferometer formed by large lateral offset splicing
Journal of The Optical Society of America B-optical Physics, 2012Co-Authors: Dewen Duan, Yun Jiang Rao, Tao ZhuAbstract:A compact, all-fiber, Open-Cavity Fabry–Perot interferometer gas refractometer formed by fusion splicing a short section of single-mode fiber (SMF) between two sections of SMFs with a large lateral offset is proposed. Only simple fabrication steps including cleaving and fusion splicing are involved, so the fabrication is easy, safe, and cost effective. Such fabricated sensors have been successfully demonstrated as gas refractometers having a refractive index response of high sensitivity (∼1540nm/RIU), good linearity, and high repeatability. Temperature evaluations also show that this kind of interferometer has a very low thermal sensitivity.
-
in fiber mach zehnder interferometer formed by large lateral offset fusion splicing for gases refractive index measurement with high sensitivity
Sensors and Actuators B-chemical, 2011Co-Authors: Dewen Duan, D. WuAbstract:Abstract A versatile, compact and sensitive in-fiber Open Cavity Mach–Zehnder interferometer (MZI) gas refractive index (RI) sensor formed by fusion splicing a short section of single-mode fiber (SMF) between two sections of single-mode fibers with a large intentional lateral offset is demonstrated. The fabrication is easy, safe, and cost effective. Gas or other materials can contact with the light signal in the totally Open Cavity of sensor directly and easily, thus the ambient refractive index (RI) change can be detected very quickly. We discussed the fabrication and operation of the sensor, and we successfully used the sensor to monitor changes of refractive index of air as a function of pressure and obtained a sensitivity of over 3402 nm/RIU (refractive index unit) with good linearity and repeatability.
Shengnan Wu - One of the best experts on this subject based on the ideXlab platform.
-
an Open Cavity fabry perot interferometer with pva coating for simultaneous measurement of relative humidity and temperature
Sensors and Actuators B-chemical, 2016Co-Authors: Shengnan Wu, Guofeng Yan, Bin Zhou, Zhenggang Lian, Xiang Chen, Sailing HeAbstract:Abstract A fiber-optic Open-Cavity Fabry-Perot (FP) interferometer (FPI) with polyvinyl alcohol (PVA) coating is proposed and experimentally demonstrated for simultaneous measurement of relative humidity (RH) and temperature. The FPI consists of an etched side-hole fiber (SHF) sandwiched in between two leading single-mode-fibers. The PVA film is plated on the fiber surface functioning as a humidity-to-refractive index (RI) transducer. Theoretical analysis details the RH and temperature influence on the spectral fringes of the FPI. Experimental results confirms and show that, the reflection loss of the FPI nonlinearly decreases more than 15 dB when the RH increases from 30%RH to 90%RH with a highest sensitivity of −1.2 dB/%RH, while the dip wavelength of the spectral fringe exhibits linear RH and temperature sensitivities of −23.1 pm/%RH and −6.14 pm/°C, respectively. Thus, by monitoring the reflection and wavelength of the interference dip, the proposed sensor enables accurate simultaneous measurement of RH and temperature. A fast and reversible time response has also been demonstrated. Such excellent sensing performance with compactness, ease of fabrication makes our sensing structure a highly promising candidate for RH and temperature monitoring applications.
-
Open Cavity fabry perot interferometer based on etched side hole fiber for microfluidic sensing
IEEE Photonics Technology Letters, 2015Co-Authors: Shengnan Wu, Guofeng Yan, Bin Zhou, Elhang Lee, Sailing HeAbstract:An Open-Cavity fiber-optic Fabry-Perot interferometer (FPI) is designed and demonstrated, with a particular consideration for microfluidic refractive index (RI) sensing. The FPI is composed of an etched side-hole fiber (SHF) sandwiched between two single-mode-fibers. Chemical etching method is used to Open up the Cavity in the SHF. Experimental results show that an optimal RI sensitivity of more than 1250 nm/RI can be achieved with an Open-Cavity length of $38~\mu \text{m}$ for the microfluidic RI range from 1.3400 to 1.3470. In addition, the temperature sensitivity can reach an ultralow level of 1.1 pm/°C. The ease of fabrication, capability for in situ measurement, and excellent performance results suggest that the proposed FPI is highly promising as an inline refractometer for temperature-insensitive label-free microfluidic detection and sensing.
Ruohui Wang - One of the best experts on this subject based on the ideXlab platform.
-
gas refractometer based on a side Open fiber optic fabry perot interferometer
Applied Optics, 2017Co-Authors: Ruohui Wang, Pingchao Huang, Jiawei He, Xueguang QiaoAbstract:In this paper, we present a gas refractometer based on an Open Cavity optical fiber Fabry–Perot interferometer. The Fabry–Perot Cavity is fabricated by sandwiching a short section of preprocessed side hole fiber between two single-mode fibers. A chemical etching process creates a side-Open Cavity through which gas can enter and leave freely. By tracking the wavelength shift of the fringe pattern, the measurement of the refractive index change of nitrogen can be realized. The experiment results show the gas RI sensitivity is up to 1290 nm/RIU.
-
gas refractometer based on optical fiber extrinsic fabry perot interferometer with Open Cavity
IEEE Photonics Technology Letters, 2015Co-Authors: Ruohui Wang, Xueguang QiaoAbstract:In this letter, we proposed a gas refractometer based on optical fiber Fabry–Perot interferometer with an Open Cavity. The Fabry–Perot Cavity is a short section capillary tube spliced between a single-mode fiber and a side-hole fiber (SHF). The unique cladding of the SHF enables gas entering or leaving the Fabry–Perot Cavity freely. The measurement of pressure-induced refractive index change of nitrogen gas has been demonstrated by monitoring the wavelength shift of the interference pattern. The robust and microsize architecture make the interferometer a good candidate for gas sensing applications.
